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Curiosity about environmental changes drives Dr Katlego Mashiane’s PhD research

21 April 2023 | Story Leonie Bolleurs | Photo Supplied

Striving to make a difference in the field of biodiversity conservation, Dr Katlego Mashiane decided to pursue a PhD in Geography, focusing on the spatial modelling of grassland diversity and nutrients in subalpine environments. He received his PhD during the recent April graduation ceremonies on the Qwaqwa Campus.

In the small village of Ga-Mabotia about 25 km outside of Polokwane, Dr Katlego Mashiane grew up, surrounded by rocky mountains characterised by boulder outcrops, where he interacted with nature from an early age.

He recently obtained his PhD, majoring in Geography, from the University of the Free State (UFS), which was conferred on him during the April graduation ceremonies that took place on the UFS Qwaqwa Campus. The title of his dissertation is Grass nutrients estimation as an Indicator of rangeland quality using satellite remote.

Predicting the presence of biodiversity and nutrients in an area

Based on the principle that diverse grasslands tend to perform better, environmental changes threaten the resilience and services these grassland ecosystems provide. The study examined how many different types of plants and animals can be found at a particular place to enhance our understanding of the ecosystem’s value to humans, and that biodiversity loss will reduce these ecosystem services. Focusing on spatial modelling of grassland diversity, Dr Mashiane specifically investigated the influence of topography and remotely sensed satellite data on species richness and diversity in subalpine environments, and how they are affected by the availability of grass species. To determine this, he used a random forest machine-learning algorithm to find the best information in the data that could be used to estimate the levels of species richness, diversity, and nitrogen in a protected national conservation park.

His study discovered that some data types – such as the near-infrared variable and certain vegetation data (EVI and SAVI) – were especially useful for determining the number and variety of species in a certain area. With this information, scientists can create models that predict the presence of different types of biodiversity and nutrients in an area.

Playing a key role in protecting our natural assets

Equipped with this knowledge, one will be able to understand how to protect and preserve different types of biodiversity and promote the nutritional value of both plants and animals in the environment. “Land managers could use this information for conservation strategies,” states Dr Mashiane, who decided to pursue this study because he was curious about how environmental changes will affect species.

“Grasslands provide important ecosystem services underpinning human well-being, and therefore warrant our protection; I would like to play a role in protecting our natural assets and contribute to understanding our biomes, especially in the context of global change,” he says.

In the next five years, Dr Mashiane plans to pursue further research and mentor other students in his field of study.

News Archive

Archbishop Emeritus Desmond Tutu visiting the UFS once again

2012-07-13

Archbishop Emeritus Desmond Tutu
13 July 2012

The University of the Free State (UFS) will once again be honoured by the presence of Archbishop Emeritus Desmond Tutu on Wednesday 18 July 2012.

Dr Tutu will be speaking at our Bloemfontein Campus for the first session of a two-day “In Conversation With …”event that is part of the Global Leadership Summit currently being held on the campus.

This sessions starts at 09:30 at the Centenary Complex. The media is invited to attend this session.

Dr Tutu will be in dialogue with Prof. Mark Solms, Head of the Department of Psychology at the University of Cape Town and owner of the Solms-Delta Wine Estate in Franschhoek.

The theme for this conversation, facilitated by Prof. Pumla Gobodo-Madikizela, will be “Living Reconciliation: Winds of Change in Franschhoek and Transformation at Solms-Delta Wine Estate”. This is based on the transformation introduced by Solms on his farm in the Franschhoek Valley.

Prof. Gobodo-Madikizela is a Senior Research Professor on trauma, forgiveness and reconciliation at the UFS.

As owner of Solms-Delta Wine Estate in Franschhoek, Prof. Solms led an initiative to transform the lives of farm workers on the estate through the Wijn de Caab Trust. This initiative was extended to empower the wider community of farm dwellers when Prof. Solms co-founded the Delta Trust and the Franschhoek Valley Transformation Charter. This organisation aims to break trans-generational cycles of social division and inequality in the valley.

The dialogue with Dr Tutu will highlight the significance of these initiatives as examples of deepening the link between socially responsive scholarship, commitment to social justice and responsible citizenship in contemporary South Africa.

Last year, the UFS awarded Dr Tutu an honorary doctorate in Theology, marking a milestone in the history of the university.

At 12:30, Dr Tutu will visit the Red Square in front of the UFS Main Building, where he will join in the fundraising festivities for the university’s official Nelson Mandela Day event and deliver a short address.

Schools in the vicinity, UFS staff and students and the public are invited to take part in the R5 coin laying ceremony in front of the Main Building.

The money collected at this event will be used to benefit the No Student Hungry (NSH) campaign as well as Bloemfontein Child Welfare.

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